kwin/plugins/platforms/drm/drm_object_crtc.h

/*
    KWin - the KDE window manager
    This file is part of the KDE project.

    SPDX-FileCopyrightText: 2016 Roman Gilg <subdiff@gmail.com>

    SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KWIN_DRM_OBJECT_CRTC_H
#define KWIN_DRM_OBJECT_CRTC_H

#include "drm_object.h"

namespace KWin
{

class DrmBackend;
class DrmBuffer;
class DrmDumbBuffer;
class GammaRamp;
class DrmGpu;

class DrmCrtc : public DrmObject
{
public:
    DrmCrtc(uint32_t crtc_id, DrmBackend *backend, DrmGpu *gpu, int resIndex);

    ~DrmCrtc() override;

    bool atomicInit() override;

    enum class PropertyIndex {
        ModeId = 0,
        Active,
        Count
    };

    bool initProps() override;

    int resIndex() const {
        return m_resIndex;
    }

    DrmBuffer *current() {
        return m_currentBuffer;
    }
    DrmBuffer *next() {
        return m_nextBuffer;
    }
    void setNext(DrmBuffer *buffer) {
        m_nextBuffer = buffer;
    }

    void flipBuffer();
    bool blank();

    int gammaRampSize() const {
        return m_gammaRampSize;
    }
    bool setGammaRamp(const GammaRamp &gamma);
    
    DrmGpu *gpu() {
        return m_gpu;
    }

private:
    int m_resIndex;
    uint32_t m_gammaRampSize = 0;

    DrmBuffer *m_currentBuffer = nullptr;
    DrmBuffer *m_nextBuffer = nullptr;
    DrmDumbBuffer *m_blackBuffer = nullptr;
    DrmBackend *m_backend;
    DrmGpu *m_gpu;
};

}

#endif